四季菜(Artemisia Lactiflora Wall ex Dc)具护肝作用的有效成份是7-甲氧基香豆素(herniarin)。笔者对原提取工艺进行了改进,认为醇提比水提好,并考虑了乙醇浓度,乙醇用量,热回流时间三个因子,按正交试验法设计L_9(3~4)表,考察分析了浸...四季菜(Artemisia Lactiflora Wall ex Dc)具护肝作用的有效成份是7-甲氧基香豆素(herniarin)。笔者对原提取工艺进行了改进,认为醇提比水提好,并考虑了乙醇浓度,乙醇用量,热回流时间三个因子,按正交试验法设计L_9(3~4)表,考察分析了浸膏得率,有效成分得率两个指标,经验证试验结果证明A_3B_3C_1为最佳提取工艺方案,即乙醇浓度为70％,乙醇溶液用量为生药的17倍量,回流时间共3h,每次1.5h。展开更多
Using seed sowing cultivation method, the four-season soilless cultivation of the sprouting seedlings of Toona sinensis was carried out with different germination accelerating treatments, cultivation substrates, culti...Using seed sowing cultivation method, the four-season soilless cultivation of the sprouting seedlings of Toona sinensis was carried out with different germination accelerating treatments, cultivation substrates, cultivation environment and management technologies by using the corresponding treatment methods in different seasons, so as to produce the sprouting vegetable products of T. sinensis which was not restricted by seasons. The test results showed that using the mixed substrate of pedite and vermiculite in winter and spring can keep moisture but not too high, and the produced sprout vegetable had good quality and high yield.展开更多
The genetic resistance to angular leaf spot （ALS） caused by Phaeoisariopsis griseola in the common bean cultivar Mexico 54 was investigated on disease reactions in parental, F1, F2 and backcross generations derived ...The genetic resistance to angular leaf spot （ALS） caused by Phaeoisariopsis griseola in the common bean cultivar Mexico 54 was investigated on disease reactions in parental, F1, F2 and backcross generations derived from crosses between a resistant cultivar Mexico 54 and a susceptible cultivar Kablanketi under screen house conditions. The heritability （h2） estimate was as high as 0.719 indicating a successful transfer of ALS resistance among progenies and thus selection can be performed in early generation. High heritability coupled with high expected genetic advance of 39.5% is considered to be more useful in predicting the outcome of selecting the best individuals. Chi-square values were computed to determine whether the observed ratios for disease reactions deviated from expected Mendelian ratios for a single, dominant gene controlling resistance to angular leaf spot in common bean. Based on the resistance of the F2, and the backcross generation to the resistant parent, a 3 resistant： 1 susceptible segregation ratio in the F2 and a 1 resistant： 1 susceptible segregation ratio in the backcross generation to the susceptible parent was obtained implying that resistance to the isolate ofPhaeoisariopsis griseola is governed by a single, dominant gene.展开更多
文摘四季菜(Artemisia Lactiflora Wall ex Dc)具护肝作用的有效成份是7-甲氧基香豆素(herniarin)。笔者对原提取工艺进行了改进,认为醇提比水提好,并考虑了乙醇浓度,乙醇用量,热回流时间三个因子,按正交试验法设计L_9(3~4)表,考察分析了浸膏得率,有效成分得率两个指标,经验证试验结果证明A_3B_3C_1为最佳提取工艺方案,即乙醇浓度为70％,乙醇溶液用量为生药的17倍量,回流时间共3h,每次1.5h。
文摘Using seed sowing cultivation method, the four-season soilless cultivation of the sprouting seedlings of Toona sinensis was carried out with different germination accelerating treatments, cultivation substrates, cultivation environment and management technologies by using the corresponding treatment methods in different seasons, so as to produce the sprouting vegetable products of T. sinensis which was not restricted by seasons. The test results showed that using the mixed substrate of pedite and vermiculite in winter and spring can keep moisture but not too high, and the produced sprout vegetable had good quality and high yield.
文摘The genetic resistance to angular leaf spot （ALS） caused by Phaeoisariopsis griseola in the common bean cultivar Mexico 54 was investigated on disease reactions in parental, F1, F2 and backcross generations derived from crosses between a resistant cultivar Mexico 54 and a susceptible cultivar Kablanketi under screen house conditions. The heritability （h2） estimate was as high as 0.719 indicating a successful transfer of ALS resistance among progenies and thus selection can be performed in early generation. High heritability coupled with high expected genetic advance of 39.5% is considered to be more useful in predicting the outcome of selecting the best individuals. Chi-square values were computed to determine whether the observed ratios for disease reactions deviated from expected Mendelian ratios for a single, dominant gene controlling resistance to angular leaf spot in common bean. Based on the resistance of the F2, and the backcross generation to the resistant parent, a 3 resistant： 1 susceptible segregation ratio in the F2 and a 1 resistant： 1 susceptible segregation ratio in the backcross generation to the susceptible parent was obtained implying that resistance to the isolate ofPhaeoisariopsis griseola is governed by a single, dominant gene.
